“When you’re tracking a dog [on the TEK 2.0 map screen], that dog’s location always remains in the center of the screen. The dog icon stays in the center of the screen and the screen automatically pans itself.”Kim Bishop, K&K Kennels
The tone function on SportDOG Brand® remote trainers is a versatile button. Some folks like to use the tone button as a warning sound for their dog before delivering stimulation. Another use would be to tone your dog each time it gives you a positive response to a command. Or, training the dog to recall, or "come" when the tone button is pressed.